Unit 9 Retest
Flashcard
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
How many lines of symmetry does a shape with 1 line of symmetry have?
Back
A shape with 1 line of symmetry can be folded along that line so that both halves match exactly.
2.
FLASHCARD QUESTION
Front
What is the rule for translating a point in the coordinate plane?
Back
The rule for translating a point (x, y) is given by (x, y) → (x+a, y+b), where 'a' and 'b' are the horizontal and vertical shifts, respectively.
3.
FLASHCARD QUESTION
Front
Dilate Point B (2, 4) by a scale factor of 3. What is the new coordinate?
Back
(6, 12) - The coordinates are multiplied by the scale factor.
4.
FLASHCARD QUESTION
Front
What does it mean to reflect a shape over the y-axis?
Back
Reflecting a shape over the y-axis means that each point (x, y) of the shape is transformed to (-x, y).
5.
FLASHCARD QUESTION
Front
If you translate a point (1, 5) 3 units to the left and 9 units down, what is the new coordinate?
Back
(-2, -4) - The new coordinates are found by subtracting from the original coordinates.
6.
FLASHCARD QUESTION
Front
What is the scale factor in dilation?
Back
The scale factor is a number that describes how much a shape is enlarged or reduced during dilation.
7.
FLASHCARD QUESTION
Front
How do you determine the center of dilation?
Back
The center of dilation is the fixed point in the plane about which all points are expanded or contracted.
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